/* ============================================
   NAVIGATION.CSS - Mega Menu & Hamburger
   ============================================ */

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-fixed);
    padding: var(--spacing-3) 0;
    background: rgba(15, 15, 26, 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    transition: all var(--transition-base);
}

.navbar.scrolled {
    padding: var(--spacing-2) 0;
    box-shadow: var(--shadow-lg);
    background: rgba(15, 15, 26, 0.95);
}

.navbar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-6);
}

/* Brand */
.navbar-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-white);
    text-decoration: none;
    flex-shrink: 0;
}

.navbar-brand-icon {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-lg);
    color: var(--color-white);
}

/* Nav links */
.navbar-nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-1);
}

.nav-item {
    position: relative;
    padding-bottom: 10px;
    margin-bottom: -10px;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-1);
    padding: var(--spacing-2) var(--spacing-3);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-400);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    cursor: pointer;
    white-space: nowrap;
}

.nav-link:hover {
    color: var(--color-white);
    background: rgba(255, 255, 255, 0.06);
}

.nav-link.active {
    color: var(--color-primary);
}

.nav-link .nav-arrow {
    font-size: 10px;
    transition: transform var(--transition-fast);
}

.nav-item:hover .nav-arrow {
    transform: rotate(180deg);
}

/* Navbar actions */
.navbar-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
}

/* Mega Menu */
.mega-menu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(-4px);
    min-width: 680px;
    padding: var(--spacing-6);
    padding-top: calc(var(--spacing-6) + 8px);
    background: rgba(30, 41, 59, 0.98);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-2xl);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    pointer-events: none;
}

.nav-item:hover .mega-menu {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
    pointer-events: all;
}

.mega-menu-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-4);
}

.mega-menu-section-title {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-gray-500);
    margin-bottom: var(--spacing-3);
    padding-left: var(--spacing-3);
}

.mega-menu-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-3);
    padding: var(--spacing-3);
    border-radius: var(--radius-lg);
    transition: background var(--transition-fast);
    cursor: pointer;
}

.mega-menu-item:hover {
    background: rgba(var(--color-primary-rgb), 0.08);
}

.mega-menu-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: var(--font-size-lg);
    background: rgba(var(--color-primary-rgb), 0.12);
    color: var(--color-primary);
}

.mega-menu-item-title {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-white);
    margin-bottom: 2px;
}

.mega-menu-item-desc {
    font-size: var(--font-size-xs);
    color: var(--color-gray-500);
    line-height: var(--line-height-normal);
}

/* Simple dropdown (for non-mega items) */
.nav-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 220px;
    padding: var(--spacing-2);
    padding-top: calc(var(--spacing-2) + 8px);
    background: rgba(30, 41, 59, 0.98);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-2xl);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-4px);
    transition: all var(--transition-base);
    pointer-events: none;
}

.nav-item:hover .nav-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    pointer-events: all;
}

.nav-dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2) var(--spacing-3);
    font-size: var(--font-size-sm);
    color: var(--color-gray-300);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    cursor: pointer;
}

.nav-dropdown-item:hover {
    background: rgba(var(--color-primary-rgb), 0.1);
    color: var(--color-primary);
}

/* Hamburger */
.hamburger {
    display: none;
    width: 40px;
    height: 40px;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background var(--transition-fast);
    flex-direction: column;
    gap: 5px;
}

.hamburger:hover {
    background: rgba(255, 255, 255, 0.06);
}

.hamburger-line {
    width: 22px;
    height: 2px;
    background: var(--color-gray-300);
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
}

.hamburger.active .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active .hamburger-line:nth-child(2) {
    opacity: 0;
}

.hamburger.active .hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile nav */
.mobile-nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 320px;
    max-width: 85vw;
    height: 100vh;
    background: rgba(15, 15, 26, 0.98);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-left: 1px solid rgba(255, 255, 255, 0.08);
    z-index: var(--z-modal);
    padding: var(--spacing-5);
    overflow-y: auto;
    transition: right var(--transition-slow);
}

.mobile-nav.active {
    right: 0;
}

.mobile-nav-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-6);
    padding-bottom: var(--spacing-4);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.mobile-nav-close {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    color: var(--color-gray-400);
    font-size: var(--font-size-xl);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.mobile-nav-close:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--color-white);
}

.mobile-nav-links {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-1);
}

.mobile-nav-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-3) var(--spacing-3);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-300);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.mobile-nav-link:hover {
    background: rgba(255, 255, 255, 0.06);
    color: var(--color-white);
}

.mobile-nav-sub {
    display: none;
    padding-left: var(--spacing-4);
    flex-direction: column;
    gap: var(--spacing-1);
    margin-top: var(--spacing-1);
}

.mobile-nav-sub.active {
    display: flex;
}

.mobile-nav-sub-link {
    padding: var(--spacing-2) var(--spacing-3);
    font-size: var(--font-size-sm);
    color: var(--color-gray-400);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.mobile-nav-sub-link:hover {
    background: rgba(var(--color-primary-rgb), 0.08);
    color: var(--color-primary);
}

.mobile-nav-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: calc(var(--z-modal) - 1);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

.mobile-nav-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* Responsive */
@media (max-width: 1023px) {
    .navbar-nav {
        display: none;
    }

    .hamburger {
        display: flex;
    }

    .mega-menu {
        position: static;
        transform: none;
        min-width: auto;
        padding: var(--spacing-3);
        border: none;
        box-shadow: none;
        background: transparent;
        backdrop-filter: none;
    }

    .mega-menu-grid {
        grid-template-columns: 1fr;
    }
}

/* Sidebar / side-nav (for the theme editor) */
.sidebar {
    position: fixed;
    top: 0;
    right: -420px;
    width: 420px;
    max-width: 90vw;
    height: 100vh;
    background: rgba(15, 15, 26, 0.98);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-left: 1px solid rgba(255, 255, 255, 0.08);
    z-index: var(--z-modal);
    transition: right var(--transition-slow);
    display: flex;
    flex-direction: column;
}

.sidebar.active {
    right: 0;
}

.sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-5) var(--spacing-5);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    flex-shrink: 0;
}

.sidebar-body {
    flex: 1;
    padding: var(--spacing-5);
    overflow-y: auto;
}

.sidebar-footer {
    padding: var(--spacing-4) var(--spacing-5);
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    flex-shrink: 0;
}